Industrial LED Lighting Checklist: 25-Point Pre-Order Audit (2026)
- Key Takeaways
- Key Definitions
- Pre Order Checklist: Technical Verification (1 to 8)
- Pre Order Checklist: Design & Layout (9 to 16)
- Pre Order Checklist: Commercial Terms (17 to 25)
- Standards & References
A procurement manager once told me “I wish someone had given me a checklist before I ordered 200 high bays.” He’d learned the hard way: the fixtures arrived with the wrong beam angle, the IES file was for a different model, and the warranty didn’t cover driver failures in his high temperature mezzanine. Three mistakes. Each one avoidable with a single line on a pre order checklist. This isn’t a theoretical guide. It’s the 25 point checklist I’d use if I were spending $50,000 on warehouse lighting tomorrow. Print it. Use it. The supplier who passes all 25 is worth your business. The one who fails three of them probably isn’t.
Before placing an LED high bay order, verify these five things at minimum: (1) the IES file matches the exact fixture model you’re buying, not a similar model, (2) the LM-79 test report confirms the claimed lumens and efficacy from an accredited lab, (3) the driver brand and rated life are stated on the spec sheet, (4) the warranty covers driver failure for at least 5 years including labor for the first 2, and (5) a DIALux simulation with your floor plan and racking layout confirms the fixture count and uniformity. If a supplier can’t provide all five, get another quote. This guide expands that into a complete 25 point pre order audit.
Key Takeaways
- The IES file is the single most important document in the procurement. It contains the actual photometric data your DIALux simulation depends on. Without it, you’re guessing at fixture count, spacing, and uniformity. A supplier who won’t share the IES file is hiding either the performance or the origin of the fixture.
- Driver brand predicts 70% of your maintenance cost. Mean Well, Inventronics, or Philips Xitanium on the spec sheet means predictable, low maintenance. “High quality driver” with no brand name means the opposite. Ask for the driver datasheet, not just the fixture spec sheet.
- Warranty terms matter more than warranty length. A “5 year warranty” that excludes drivers, requires you to ship failed fixtures to China at your cost, and takes 6 to 8 weeks for replacement is worth very little. Read the warranty terms. Not just the number of years.
- Sample testing catches 80% of specification gaps. Order one sample fixture before the production run. Test it against the LM-79 data. Check the driver brand. Measure the actual beam angle. Verify the CCT and CRI with a handheld spectrometer. The sample costs $200 to $400. Catching a spec mismatch before 200 units ship saves $15,000 to $40,000.
Key Definitions
- IES File
- A standardized photometric data file (per IES LM-63) containing the 3D light distribution of a specific fixture model. Required for DIALux and Relux simulations. Every fixture SKU should have its own IES file generated from LM-79 measurements. If the supplier provides an IES file for a “similar” model, reject it.
- LM-79 Report
- The test report validating total luminous flux, efficacy (lm/W), CRI, CCT, and chromaticity of an LED fixture. Must be from an ILAC/ISO 17025 accredited lab (TUV, SGS, Intertek, UL). In house test reports from the factory’s own equipment are not sufficient for verification.
- Bill of Materials (BOM)
- The list of components used in the fixture: LED chip brand and bin, driver brand and model, housing material and thickness, lens material, wiring gauge, surge protector rating. A supplier who won’t share the BOM is substituting components. Ask for it before production, not after delivery.
- Sample / Golden Sample
- A production representative fixture built to the same BOM and process as the production order. Test the sample against the specification before approving the production run. The sample is your insurance against specification drift between quotation and delivery.
Pre Order Checklist: Technical Verification (1 to 8)
- IES file received for the exact fixture model and wattage you’re ordering. Verify the file name matches the SKU. Open it in IES Viewer to confirm it contains valid photometric data.
- LM-79 test report received from an accredited lab. Check the lab’s ISO 17025 accreditation. Verify the report date is within 2 years. Verify the tested model matches your order.
- LM-80 test report for the LED chips and TM-21 projection for L70/L90. L70 should be 50,000 hours minimum at the fixture’s rated operating temperature.
- Driver brand, model, and datasheet confirmed. Mean Well HLG, Inventronics EUM, or Philips Xitanium preferred. Verify the driver’s rated case temperature covers your operating environment.
- Surge protection rating confirmed: 4kV minimum for general industrial, 6kV for areas with frequent voltage fluctuation. Ask whether the surge protector is replaceable or integrated.
- CRI verified from LM-79 report: minimum 80 for general, minimum 90 for inspection areas. Don’t accept the catalog CRI claim. Check the LM-79 report directly.
- CCT and SDCM verified: SDCM 3 or better for color consistency across fixtures. SDCM above 5 means visible color differences between fixtures in the same space.
- IP rating confirmed: IP65 for washdown and cold storage areas, IP54 minimum for general warehouse. The IP rating should be supported by a test report, not just a catalog claim.
Pre Order Checklist: Design & Layout (9 to 16)
- DIALux or Relux simulation completed with your floor plan, racking layout, and surface reflectances. Not a generic simulation. Your actual floor plan.
- Fixture count confirmed by simulation, not supplier estimate. The simulation must show maintained lux (not initial) with a stated maintenance factor.
- Uniformity (U0) verified from simulation output: minimum 0.4 for aisles, 0.6 for packing, 0.7 for inspection. Per EN 12464-1.
- Glare rating (UGR) verified from simulation: maximum 25 for general, 22 for sustained tasks, 19 for inspection. Per EN 12464-1.
- Beam angle matched to ceiling height per the IES file spacing criterion. Verified by DIALux simulation, not by catalog specification.
- Mounting height confirmed for each zone, accounting for pendant drops or surface mounting. Include suspension chain or rod length in the mounting height calculation.
- Fixture positions checked against ceiling obstructions from mechanical and electrical drawings. HVAC ducts, sprinkler pipes, cable trays, conveyors.
- Emergency lighting requirements separated from general lighting specification. Per EN 1838 or NFPA 101. Emergency fixtures are a separate line item with separate circuits.
Pre Order Checklist: Commercial Terms (17 to 25)
- Fixture BOM received and reviewed. LED chip brand, driver brand and model, housing material, lens material, wiring gauge. No substitutions without written approval.
- Sample fixture ordered, received, and tested against the LM-79 data. Measure CCT, CRI, power draw, and beam pattern. Document discrepancies.
- Warranty terms reviewed in detail. Covers parts and labor? Labor coverage period? Maximum replacement lead time? Shipping cost responsibility? Exclusions?
- Warranty length: minimum 5 years on fixture, 5 years on driver. 7 to 10 years preferred for drivers.
- Spare parts availability: drivers available for minimum 5 years after production. Order 3 to 5% spare drivers with the initial order.
- Certifications confirmed: CE (EU), UL/ETL (US), DLC Premium (US rebates), SAA (AU), UKCA (UK). Must be on the actual product label, not just the quotation.
- Packaging specification reviewed: individual carton with foam insert, palletized, stretch wrapped, moisture barrier for ocean freight. ISTA 3A transit testing recommended for container shipments.
- Inspection terms agreed: AQL 1.5 Level II for visual, AQL 0.65 for electrical safety. Third party inspection (SGS, Intertek, Bureau Veritas) before shipment.
- Payment terms agreed: 30% deposit, 70% against inspection report and bill of lading. Never 100% upfront. Letter of credit for orders above $50,000.
Standards & References
- IES LM-79-19 — The measurement standard backing every performance claim on this checklist.
- IES LM-80-20 + TM-21-19 — Lumen maintenance validation for warranty terms and L70 claims.
- EN 12464-1:2021 — The design standard your lighting must meet. Em, U0, UGR, CRI.
- IES LM-63-02 — The IES file format standard. Your simulation depends on it.
- ISO 2859-1 (AQL sampling) — The inspection sampling standard referenced in your quality terms.
- ISTA 3A — Package testing standard for parcel delivery. Confirms your fixtures survive shipping intact.
Frequently Asked Questions
Q: What is the most important thing to check before ordering LED high bay lights?
A: The IES file. It’s the single document that validates every performance claim: total lumens, beam angle, spacing criterion, and light distribution. Without it, you can’t run a DIALux simulation. Without a simulation, you don’t know if the fixture count is correct. A supplier who can’t provide the IES file for the exact model you’re ordering isn’t a manufacturer. Kingseng provides IES files as standard with every quotation, generated from LM-79 measurements by accredited labs.
Q: How do I verify that the LED fixtures I receive match the specification I ordered?
A: Order one sample fixture before the production run. Test it: measure power draw with a plug in meter (should be within 5% of spec), measure CCT and CRI with a handheld spectrometer (within stated tolerance), visually confirm the driver brand and model match the BOM, and measure the beam pattern if you have access to a goniophotometer or send it to a test lab. Document everything. If the sample matches the spec, approve production. If it doesn’t, reject and require correction before the production run starts.
Q: What should an LED lighting warranty actually cover?
A: At minimum: parts for 5 years, labor for 2 years (reasonable access assumed), maximum 2 week replacement lead time, shipping cost for warranty replacements covered by the supplier, and coverage for driver failure (the most common failure mode). A warranty that excludes drivers, requires you to ship failed units to China at your cost, or takes 6 to 8 weeks for replacement is marketing, not coverage. Read the terms. Kingseng’s standard warranty: 5 years parts and labor (2 years labor), 1 week replacement dispatch, shipping covered, drivers included.
Q: How many spare fixtures should I order with my LED high bay installation?
A: 3 to 5% spare drivers and 1 to 2 complete spare fixtures per 100 installed. For 100 fixtures: order 3 to 5 spare drivers ($225 to $375 total) and 1 to 2 complete spare fixtures. The spares give you immediate swap capability when a driver fails, avoiding a 2 week wait for warranty shipment. Store them near the electrical room, labeled with the fixture model and installation date. Kingseng includes 2% spare drivers at no charge on orders over 50 fixtures.
Q: Is a sample order really necessary before a large LED high bay purchase?
A: Yes, for any order above $10,000. The sample costs $200 to $400 including shipping. It’s the cheapest insurance in the lighting industry. A spec mismatch caught during sample testing costs $400. The same mismatch caught after 200 units have shipped costs $15,000 to $40,000 to correct. Test the sample against the LM-79 report. Check the driver brand. Measure the CCT and CRI. If everything matches, you’ve validated your supplier. If something doesn’t, you’ve just saved yourself from a very expensive problem.
Q: What certifications should I require for LED high bay lights imported from China?
A: Depends on the destination market. US: UL or ETL listing, DLC Premium (for utility rebates), FCC Part 15. EU: CE marking, EN 60598 compliance, RoHS, WEEE registration. UK: UKCA marking. Australia: SAA approval, RCM mark. The certification mark must be on the product label, not just on the quotation or website. Ask for a photo of the actual label. Kingseng provides UL/ETL listed, DLC Premium, CE, and UKCA certified fixtures with the marks on the product label, supported by certification body documentation.
This checklist exists because every line on it represents a problem someone else already paid to discover. Run through it before you sign. The 30 minutes it takes could save you 30 thousand dollars.
✎ About This Article
Author: · Published: July 13, 2026 · Last updated: July 13, 2026
This content was produced with AI assistance and reviewed for factual accuracy by Kingseng's editorial team. Technical claims are verified against industry standards (IES LM-79, LM-80, ANSI C78.377, IEC 60598). For procurement decisions, always verify specifications with suppliers directly. Contact us for custom sourcing consultation.